God's Battalions
Rodney Stark
Cosmos
Carl Sagan
A Theory of Everything
Kenneth E. Wilber
Spirituality: A Very Short Introduction
Philip Sheldrake
Very Short Introductions (1)
First How Things Work Encyclopedia
Dk Pub
Energy Work: The Secrets of Healing and Spiritual Development
Robert Bruce
Father Seraphim Rose: His Life and Works
Hieromonk Damascene